WO2011157194A1 - 混凝土搅拌站的掺合料搅拌系统 - Google Patents

混凝土搅拌站的掺合料搅拌系统 Download PDF

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Publication number
WO2011157194A1
WO2011157194A1 PCT/CN2011/075484 CN2011075484W WO2011157194A1 WO 2011157194 A1 WO2011157194 A1 WO 2011157194A1 CN 2011075484 W CN2011075484 W CN 2011075484W WO 2011157194 A1 WO2011157194 A1 WO 2011157194A1
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Prior art keywords
mixing
dust collector
box
aggregate
powder
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PCT/CN2011/075484
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English (en)
French (fr)
Inventor
蒋志辉
张架桥
倪小青
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湖南三一智能控制设备有限公司
三一重工股份有限公司
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Publication of WO2011157194A1 publication Critical patent/WO2011157194A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04Supplying or proportioning the ingredients
    • B28C7/0422Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
    • B28C7/0436Weighing means specially adapted for use in batching plants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0046Storage or weighing apparatus for supplying ingredients
    • B28C7/0053Storage containers, e.g. hoppers, silos, bins

Definitions

  • Admixture mixing system for concrete mixing plant The present application claims priority to Chinese Patent Application No. 201020227110.9, entitled “Admixing System for Concrete Mixing Plant", submitted to the Chinese Patent Office on June 17, 2010. The entire contents of which are incorporated herein by reference.
  • BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to concrete agitation techniques and, more particularly, to a blending system for a concrete mixing plant.
  • Concrete mixing stations are used for on-site mixing operations of road and bridge construction and mixing operations for commercial production of commercial concrete and concrete prefabricated parts.
  • the mixing and mixing system in the concrete mixing station mainly includes: a mixing machine, an aggregate waiting silo installed above the mixing host, a powder measuring bucket, a dust removing device for removing dust pollutants generated during the operation of the mixing station, and control Control devices for the operation of each part, etc.
  • the aggregate waiting silo and the powder measuring bucket are provided with a feeding port and a discharging port
  • the stirring main body is provided with an aggregate input port and a powder input port, and respectively is combined with the aggregate waiting silo and the powder material.
  • the discharge port of the bucket is connected.
  • a valve is arranged at the discharge port of the aggregate waiting silo, and the valve is opened when the aggregate waiting silo is fed to the mixing host, and is closed at other times.
  • the mixing machine is used to mix and mix the input aggregate and powder into a finished product.
  • the mixing and mixing system of the concrete mixing station during the operation, when the aggregate and the powder are put into the mixer, and when the powder is fed to the powder weighing hopper and the material is fed to the aggregate, due to the aggregate and the powder
  • the material (by which it is a powder) has its own characteristics, and inevitably there is a serious dust problem, causing environmental pollution. Therefore, it is necessary to use a dust removal device for dust removal.
  • the first type is a box type dust collector, and a plurality of bag type filter elements are disposed in the dust box.
  • the box type dust collector is separately connected with the powder weighing hopper and the mixing host, and the whole mixing material mixing system comprises: a mixing host, an aggregate waiting silo and a powder measuring hopper installed above the stirring host, and installation Above the box filter connected to the powder metering bucket and the mixing host. Due to box type The dust collector is a closed container, and the valve at the outlet of the aggregate waiting for the silo is not closed when the material is fed to the mixing host. Therefore, when the stirring main unit discharges, a sufficient amount of air is not replenished in time, and a negative is generated therein.
  • the second dust removing device is a forced dust collector, such as a pulse backflushing bag dust collecting machine, in which a plurality of filter elements and a centrifugal fan are arranged, and a centrifugal fan is used to generate a negative pressure in the dust collecting machine, thereby forcing The dust-containing air is filtered through a filter.
  • the forced dust collector is installed above the aggregate waiting silo, communicates with the aggregate waiting silo, and the powder measuring bucket is also connected to the forced dust collector through the connecting pipe, so the aggregate waiting silo and the powder measuring The dust in the bucket directly enters the forced dust collector for dust removal.
  • the problem to be solved by the present invention is to provide a dust removing effect, and effectively avoid the negative pressure generated by the stirring system during the working process, and effectively avoid the easy clogging of the filter core of the forced dust collector, and accurately measure the mixing material of the concrete mixing station. Stir the system.
  • a mixing agitating system for a concrete mixing station comprising a mixing main machine, an aggregate waiting silo and a powder measuring bucket, wherein the aggregate waiting silo and the powder measuring bin are respectively located at the mixing host And connected to the mixing host, the stirring system further comprises: a forced dust collector, a centrifugal fan including a filter element and forced air flowing through the filter element, and the forced dust collector is connected with the upper part of the aggregate waiting silo; the box dust collector
  • the utility model comprises a filter element, wherein the first side and the second side of the box type dust collector are respectively connected to the aggregate waiting silo and the powder measuring bucket, and the bottom thereof is connected with the top of the stirring host.
  • a regulating valve is disposed between the box type dust collector and the aggregate waiting silo, and the opening degree of the regulating valve is inversely proportional to the pressure difference between the box type dust collector and the aggregate waiting chamber.
  • the regulating valve comprises: a valve seat having a valve hole; a guide rod, the first end is connected to the valve seat, the second end is extended toward the box type dust collector side; the valve core plate is configured to match the valve hole, and is installed At the second end of the guide rod; an adjustment spring, sleeved on the guide rod, between the valve seat and the valve core plate.
  • a first filter bag is disposed between the box dust collector and the powder metering bucket.
  • a second filter bag is disposed between the box dust collector and the mixing host.
  • the first side communicates with the top of the aggregate holding bin.
  • the second side communicates with the top of the powder metering bucket.
  • the first side and the second side are opposite sides.
  • the opening on the second side that communicates with the powder metering hopper is located at an upper portion of the second side.
  • the first end and the second end of the guiding rod are respectively provided with a first limiting nut and a second limiting nut.
  • the mixing system of the admixture includes a forced dust collector connected to the aggregate waiting silo and a box dust collector connected to the powder measuring bucket and the mixing host, and the box type dust collector is also connected to the aggregate at the same time. Waiting for the silo, this allows the dust from the powder measuring bucket and the mixing main machine to be dusted twice by the box dust collector and the forced dust collector, which increases the dust removing effect, and because the dust first passes through the box dust collector When the air enters the aggregate waiting silo, the dust concentration has been greatly reduced, effectively avoiding the blockage of the forced dust collector filter element, thereby avoiding the generation of negative pressure. This reduces the maintenance cost of the dust collector and improves the economic life of the filter cloth.
  • the box type dust collector is also connected to the aggregate waiting silo, and the aggregate waiting silo is connected to the atmosphere, this enables the stirring main body to receive air in time when unloading, thereby avoiding the generation of negative pressure therein.
  • the impact measurement to ensure the accuracy of the measurement.
  • the opening degree of the regulating valve is inversely proportional to the pressure difference between the box type dust collector and the aggregate waiting chamber, when the dust concentration is higher than Large, when the pressure on the side of the box filter is much larger than the pressure on the side of the aggregate waiting tank, the opening of the regulating valve is correspondingly reduced, which reduces the pressure of the forced dust collector connected to the aggregate waiting silo , further avoiding the blockage of the filter element therein.
  • the drawings are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawings: Fig.
  • FIG. 1 is a perspective view showing the structure of a mixing agitating system of a concrete mixing plant according to a first embodiment of the present invention
  • Fig. 2 is a view showing a concrete mixing station according to a first embodiment of the present invention.
  • Rear view of the mixing system of the admixture Figure 3 shows the regulating valve between the box precipitator and the aggregate waiting bin in the admixture mixing system of the concrete mixing plant according to the first embodiment of the present invention.
  • Fig. 4 is a view showing the internal structure of a box type dust remover in a mixing agitating system of a concrete mixing plant according to a first embodiment of the present invention.
  • the mixing and agitating system of the concrete mixing station comprises a stirring main body 1, an aggregate waiting storage bin 2, a powder measuring bucket 10, a forced dust collecting machine 5, and a box dust removing device. 6.
  • the aggregate waiting bin 2 and the powder weighing hopper 10 are respectively connected to the stirring main unit 1 and communicated therewith.
  • the forced dust collector 5 is located above the aggregate waiting bin 2 and communicates with the upper portion of the aggregate waiting bin 2.
  • the first side and the second side of the box type dust collector 6 are opposite sides in this embodiment, respectively connected to the top of the aggregate waiting bin 2 and the powder measuring hopper 10, and the bottom thereof and the top of the mixing machine 1 Connected.
  • the forced dust collector 5 is provided with a centrifugal fan and a centrifugal fan for forcing air to flow through the filter element.
  • the filter cartridge 62 is disposed in the box type dust remover 6.
  • a first filter bag 8 is disposed between the box dust collector 6 and the powder metering hopper 10.
  • a second filter bag 12 is disposed between the box dust collector 6 and the mixing host 1.
  • a screw conveyor (not shown) feeds the powder metering bucket 10, and an inclined belt conveyor (not shown) feeds the aggregate waiting bin 2, the aggregate waiting bin 2 and the powder Measuring direction
  • the mixing machine 1 feeds, the three processes continue to circulate, and the processes may overlap in time.
  • the screw conveyor feeds the powder measuring bucket 10
  • the air in the raw powder measuring bucket 10 is gradually replaced by the newly added material, and the pressure in the bucket is gradually increased (this phenomenon is called positive pressure), and There is a certain drop in the feeding (generally 300-400mm), and the powdery material will splash to form dust.
  • the dust is lifted by the first filter bag 8 for the first time, the dust is lifted to the box dust collector 6 for the second dust removal.
  • the dust generated when the inclined belt conveyor (not shown) feeds the aggregate waiting bin 2 is also dusted by the forced dust collector 5 that communicates with the upper portion thereof.
  • the main body 1 is unloaded, a large amount of material is discharged from the main machine, and the outlet of the unloading device of the mixing main machine 1 is blocked by the discharged material at this time, so there is not enough air to be replenished from the port, and the whole system is Negative pressure is generated.
  • the aggregate storage bin 2 communicating with the atmosphere is replenished with air through the box dust collector 6. If the first filter bag 8 is disposed between the box dust collector 6 and the powder metering bucket 10, The air can be replenished through the first filter bag 8.
  • the air can be replenished through the second filter bag 12, and high-speed air is formed in the pipe. Flow, so that negative pressure is effectively solved.
  • the first side and the second side of the box type dust collector 6 are opposite sides, and the box type dust collector 6 communicates with the top of the aggregate material receiving bin 2, which is favorable for containing dusty air from The flow of the box filter 6 to the aggregate waiting bin 2.
  • the box type dust collector 6 communicates with the top of the powder metering hopper 10, which facilitates the smooth entry of the dust raised in the powder metering bucket 10 into the box type dust collector 6.
  • a first filter bag 8 is disposed between the box filter 6 and the powder metering hopper 10, and a second filter bag 12 is disposed between the box 1 and the mixing machine 1 to perform dusty air.
  • the opening on the second side of the box type dust collector 6 communicating with the powder metering hopper 10 is located at the upper portion of the second side surface, so that the air can be sufficiently removed by the filter bag in the box type dust collector 6, which is not easy.
  • a regulating valve 4 may be disposed between the box type dust collector 6 and the aggregate waiting bin 2, and the opening degree of the regulating valve 4 is set to be the same as the box type dust collector 6 and the aggregate.
  • the regulating valve 4 may include: a valve seat 46 having a valve hole, a guide rod 41, a valve core plate 45, and an adjustment spring 44.
  • the first end of the guiding rod 41 is connected to the valve seat 46, and is restrained on the outer side by the first limiting nut 42, and the second end extends toward the side of the box dust collector 6; the valve core plate 45 is configured to be seated with the valve seat
  • the valve holes on the 46 are matched, mounted on the second end of the guide rod 41, and are limited to the outside by the second limit nut 47; the adjustment spring 44 is sleeved on the guide rod 41, and is located at the valve seat 46 and the valve core plate.
  • the P1 side is the box type dust collector 6 side
  • the P2 side is the aggregate material waiting bay 2 side.

Abstract

一种混凝土搅拌站的掺合料搅拌系统,包括搅拌主机(1)以及位于搅拌主机(1)之上并与其连通的骨料待料仓(2)和粉料计量斗(10)。搅拌系统还包括:强制收尘机(5),包括滤芯和强制空气流经滤芯的离心风机,强制收尘机(5)与骨料待料仓(2)的上部相连通;搅拌系统也包括带滤芯(62)的箱式除尘器(6),箱式除尘器(6)的第一侧面和第二侧面分别连通骨料待料仓(2)和粉料计量斗(10),其底部与搅拌主机(1)的顶部相连通。该结构的掺和料搅拌系统有效避免了强制除尘器(5)滤芯容易堵塞的情况;还使得搅拌主机(1)卸料时,能够及时得到空气补充,从而避免在其中产生负压而影响计量。

Description

混凝土搅拌站的掺合料搅拌系统 本申请要求于 2010 年 06 月 17 日提交中国专利局、 申请号为 201020227110.9, 发明名称为"混凝土搅拌站的掺合料搅拌系统"的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及混凝土搅拌技术, 更具体地, 涉及一种混凝土搅拌站的掺 和料搅拌系统。 背景技术 混凝土搅拌站应用于路桥建筑施工的现场搅拌作业以及商品混凝土、 混凝土预制件工厂化生产的搅拌作业。 混凝土搅拌站中的掺和料搅拌系统主要包括: 搅拌主机、 安装在搅拌 主机上方的骨料待料仓和粉料计量斗、 用于除去搅拌站作业时产生的粉尘 污染物的除尘装置以及控制各部分的作业过程的控制装置等。 其中, 骨料 待料仓和粉料计量斗均设有进料口和出料口, 搅拌主机上设有骨料投入口 和粉料投入口, 并分别与骨料待料仓和粉料计量斗的出料口连通。 并且, 骨料待料仓的出料口设有阀门, 该阀门在骨料待料仓向搅拌主机投料时打 开,其余时刻关闭。搅拌主机用于将投入的骨料和粉料混合搅拌成成品料。 混凝土搅拌站的掺和料搅拌系统在作业过程中, 将骨料和粉料投入到 搅拌机时, 以及向粉料称量斗输送粉料和向骨料待料仓投料时, 由于骨料 和粉料(由其是粉料)本身的特性, 不可避免地存在严重的扬尘问题, 引 起环境污染。 所以必须使用除尘装置进行除尘处理。 现有的技术中大致存在两种除尘装置。 第一种为箱式除尘器, 在除尘 箱中设置有多个布袋式的滤芯。 这种装置充分利用了布袋的可伸缩性和密 封性进行工作, 布袋采用帆布制作而成, 能够有效避免粉尘外漏。 具体地, 箱式除尘器与粉料称量斗和搅拌主机分别连通, 整个的掺和料搅拌系统包 括: 搅拌主机、 安装在搅拌主机上方的骨料待料仓和粉料计量斗, 以及安 装在上方、 与粉料计量斗和搅拌主机分别连通的箱式除尘器。 由于箱式除 尘器为密闭容器, 而骨料待料仓下方出料口的阀门不在向搅拌主机投料时 是关闭的, 从而, 在搅拌主机卸料时, 不能及时得到足量的空气补充, 在 其中产生负压, 影响计量, 而计量装置的准确性直接关系到掺合搅拌系统 产品的质量和生产成本。 第二种除尘装置为强制除尘器, 例如脉冲反吹布袋收尘机, 在该收尘 机中布置有多个滤芯以及离心式风机, 利用离心式风机将收尘机中产生负 压, 从而强制使含有粉尘的空气经过滤芯过滤。 具体地, 强制除尘器安装 在骨料待料仓上方, 与骨料待料仓连通, 并且, 粉料计量斗也通过连通管 连接至强制除尘器, 所以, 骨料待料仓和粉料计量斗中的粉尘都直接进入 强制除尘器进行除尘。 由于这种装置中搅拌主机与骨料待料仓可以通过设 置连通管连通,从而避免了第一种方式中搅拌主机卸料时产生负压的情况。 但是, 由于粉尘全部直接进入除尘器, 使得除尘器中的粉尘浓度极大, 使 得其中的滤芯容易堵塞, 大大降低了除尘效率, 除尘效果较差。。 发明内容 本发明所要解决的问题是提供一种除尘效果好, 而且有效避免搅拌系 统在工作过程中产生负压, 并有效避免强制除尘器滤芯易堵塞的, 计量准 确的混凝土搅拌站的掺和料搅拌系统。 根据本发明的一个方面,提供了一种混凝土搅拌站的掺和料搅拌系统, 包括搅拌主机、 骨料待料仓和粉料计量斗, 骨料待料仓和粉料计量斗分别 位于搅拌主机之上并与该搅拌主机连通, 搅拌系统还包括: 强制收尘机, 包括滤芯和强制空气流经滤芯的离心风机, 强制收尘机与骨料待料仓的上 部相连通; 箱式除尘器, 包括滤芯, 箱式除尘器的第一侧面和第二侧面分 别连通骨料待料仓和粉料计量斗, 其底部与搅拌主机的顶部相连通。 进一步地, 箱式除尘器和骨料待料仓之间设置有调节阀, 调节阀的开 口度与箱式除尘器和骨料待料仓之间的压力差成反比。 进一步地, 调节阀包括: 阀座, 具有阀孔; 导杆, 第一端连接在阀座 上, 第二端朝向箱式除尘器侧延伸; 阀芯板, 配置为与阀孔相匹配, 安装 在导杆的第二端; 调节弹簧, 套设在导杆上, 位于阀座和阀芯板之间。 进一步地, 箱式除尘器与粉料计量斗之间设置有第一滤袋。 进一步地, 箱式除尘器与搅拌主机之间设置有第二滤袋。 进一步地, 第一侧面连通骨料待料仓的顶部。 进一步地, 第二侧面连通粉料计量斗的顶部。 进一步地, 第一侧面和第二侧面为相对侧面。 进一步地,第二侧面上与粉料计量斗连通的开口位于第二侧面的上部。 进一步地, 导杆的第一端和第二端分别设有第一限位螺母和第二限位 螺母。 本发明具有以下有益效果:
1.由于掺和料搅拌系统中同时包括了与骨料待料仓连接的强制收尘机 以及与粉料计量斗和搅拌主机连接的箱式除尘器, 且箱式除尘器还同时连 接骨料待料仓, 这就使得来自粉料计量斗和搅拌主机中的粉尘可以顺次经 过箱式除尘器和强制收尘机两次除尘, 增大了除尘效果, 并且由于粉尘首 先经过箱式除尘器,使得空气进入骨料待料仓时,粉尘浓度已大幅度降低, 有效避免了强制除尘器滤芯堵塞的情况, 进而避免了负压的产生。 这样就 降低了收尘机的维护成本, 提高了滤布的经济寿命。
2. 另外, 由于箱式除尘器还同时连接骨料待料仓, 而骨料待料仓与大 气相连, 这就使得搅拌主机卸料时, 能够及时得到空气补充, 从而避免在 其中产生负压而影响计量, 确保计量的准确性。
3. 由于在箱式除尘器和骨料待料仓之间设置有调节阀,该调节阀的开 口度与箱式除尘器和骨料待料仓之间的压力差成反比, 当粉尘浓度较大, 而使得箱式除尘器侧的压力比骨料待料仓侧的压力大很多时, 调节阀开口 相应减小, 这就减小了对骨料待料仓所连通的强制除尘器的压力, 进一步 避免了其中滤芯的堵塞。 附图说明 附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发明 的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。 在附图中: 图 1示出了根据本发明的第一实施例的混凝土搅拌站的掺和料搅拌系 统的立体结构示意图; 图 2示出了根据本发明的第一实施例的混凝土搅拌站的掺和料搅拌系 统的后视示意图; 图 3示出了根据本发明的第一实施例的混凝土搅拌站的掺和料搅拌系 统中箱式除尘器与骨料待料仓之间的调节阀的结构示意图; 图 4示出了根据本发明的第一实施例的混凝土搅拌站的掺和料搅拌系 统中箱式除尘器的内部结构示意图。 具体实施方式 下面将参考附图并结合实施例, 来详细说明本发明。 如图 1和图 2所示, 根据本发明的混凝土搅拌站的掺和料搅拌系统, 包括搅拌主机 1、 骨料待料仓 2、 粉料计量斗 10、 强制收尘机 5和箱式除 尘器 6。骨料待料仓 2和粉料计量斗 10分别在搅拌主机 1之上,与其连通。 强制收尘机 5位于骨料待料仓 2的上方, 与骨料待料仓 2的上部相连通。 箱式除尘器 6的第一侧面和第二侧面, 本实施例中为相对的两个侧面, 分 别连通骨料待料仓 2和粉料计量斗 10的顶部,其底部与搅拌主机 1的顶部 相连通。 其中, 强制收尘机 5中设置有滤芯和强制空气流经滤芯的离心风 机, 另外, 从图 4中可以看出箱式除尘器 6中设置有滤芯 62。 优选地, 箱式除尘器 6与粉料计量斗 10之间设置有第一滤袋 8。 优选 地, 箱式除尘器 6与搅拌主机 1之间设置有第二滤袋 12。 工作时, 螺旋输送机(图中未示出)向粉料计量斗 10投料, 斜皮带输 送机(图中未示出) 向骨料待料仓 2投料, 骨料待料仓 2及粉料计量斗向 搅拌主机 1投料, 三个过程不断循环, 各过程在时间上有可能是重叠的。 螺旋输送机向粉料计量斗 10上料时, 原粉料计量斗 10内的空气逐渐被新 增物料所替代, 斗内压力也逐渐增大(这种现象称之为正压), 同时, 上料 有一定落差 (一般在 300-400mm ), 粉状物料会飞溅形成扬尘。 扬起的粉 尘经第一滤袋 8第一次除尘后, 到达箱式除尘器 6进行第二次除尘。 骨料待料仓 2和粉料计量斗 10向搅拌主机 1投料时, 也会产生粉尘, 同时搅拌主机内正压力增大,搅拌主机 1内压缩空气经第二滤袋 12第一次 除尘后, 也到达箱式除尘器 6。 经过第一滤袋 8、 第二滤袋 12及箱式除尘 器 6的除尘后, 大部分粉尘落在箱式除尘器 6内, 含有少量粉尘的空气到 达骨料待料仓 2, 骨料待料仓 2顶部安装的强制收尘机 5中安装的强制空 气流经滤芯的离心风机, 在本实施例中为脉冲布袋收尘机, 能继续有效除
另一方面, 斜皮带输送机(图中未示出) 向骨料待料仓 2投料时产生 的粉尘, 也会由与其上部相连通的强制收尘机 5进行除尘。 另外, 搅拌主 机 1卸料后, 由于大量物料从主机内排出, 且搅拌主机 1卸料装置出口此 时被所卸的物料所堵塞, 所以不能有足够的空气从此口补充, 这就会整个 系统会产生负压, 这时通过与大气连通的骨料待料仓 2经由箱式收尘器 6 补充空气, 若箱式除尘器 6与粉料计量斗 10之间设置有第一滤袋 8, 更可 以通过第一滤袋 8补充空气, 若箱式除尘器 6与搅拌主机 1之间设置有第 二滤袋 12, 还可以通过第二滤袋 12补充空气, 并在管道内形成高速的空 气流动, 使负压得到有效解决。 在本实施例中, 箱式除尘器 6的第一侧面和第二侧面为相对的两个侧 面, 以及箱式除尘器 6与骨料待料仓 2的顶部连通, 都有利于含粉尘空气 从箱式除尘器 6到骨料待料仓 2的流动。 另外, 本实施例中, 箱式除尘器 6与粉料计量斗 10的顶部连通, 有利于粉料计量斗 10中扬起的粉尘顺利 进入箱式除尘器 6。 在优选的方式中, 箱式除尘器 6与粉料计量斗 10之间 设置有第一滤袋 8, 以及与搅拌主机 1之间设置有第二滤袋 12, 都可以对 含粉尘空气起到初步除尘的作用。 另外,优选地,箱式除尘器 6的第二侧面上与粉料计量斗 10连通的开 口位于第二侧面的上部, 这样可以使空气在箱式除尘器 6中被滤袋充分除 尘, 而不易直接积在除尘器的下方。 如图 1所示, 优选地, 可以将箱式除尘器 6和骨料待料仓 2之间设置 一个调节阀 4, 将该调节阀 4的开口度设置为与箱式除尘器 6和骨料待料 仓 2之间的压力差成反比。 这样当箱式除尘器 6中的粉尘浓度较大, 而使 得箱式除尘器 6侧的压力比骨料待料仓 2的压力大很多时, 调节阀 4开口 相应减小, 这就减小了对骨料待料仓 2所连通的强制除尘器 5的压力, 进 一步避免了其中滤芯的堵塞。 如图 3所示, 具体地, 该调节阀 4可以包括: 具有阀孔的阀座 46、 导 杆 41、 阀芯板 45和调节弹簧 44。 其中, 导杆 41的第一端连接在阀座 46 上, 通过第一限位螺母 42在外侧限位, 第二端朝向箱式除尘器 6侧延伸; 将阀芯板 45配置为与阀座 46上的阀孔相匹配, 安装在导杆 41的第二端, 并通过第二限位螺母 47在外侧限位;调节弹簧 44套设在导杆 41上,位于 阀座 46和阀芯板 45之间。 如图 3所示, P1侧为箱式除尘器 6侧, P2侧为骨料待料仓 2侧, 可 以看出, 当箱式除尘器 6中压力增大时, P1大于 P2, 阀芯板 45在压差作 用下, 向 P2方向移动, 靠近使得整个调节阀 4的开口度减小, 甚至关闭, 从而限制了由骨料待料仓 2到强制除尘器 5空气流动压力, 避免了强制除 尘器 5中滤芯的堵塞。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于 本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明 的保护范围之内。

Claims

权 利 要 求
1、 一种混凝土搅拌站的掺和料搅拌系统, 包括搅拌主机(1)、 骨 料待料仓( 2 )和粉料计量斗( 10 ), 所述骨料待料仓( 2 )和粉料计量 斗( 10 )分别位于所述搅拌主机( 1 )之上并与该搅拌主机( 1 )连通, 其特征在于, 所述搅拌系统还包括: 强制收尘机(5), 包括滤芯和强制空气流经滤芯的离心风机, 所述强制收尘机(5)与所述骨料待料仓(2) 的上部相连通;
箱式除尘器(6), 包括滤芯 (62), 所述箱式除尘器 (6) 的第 一侧面和第二侧面分别连通所述骨料待料仓( 2 )和粉料计量斗( 10 ), 其底部与所述搅拌主机( 1 ) 的顶部相连通。
2、根据权利要求 1所述的混凝土搅拌站的掺和料搅拌系统,其特 征在于, 所述箱式除尘器(6)和所述骨料待料仓(2)之间设置有调 节阀 (4), 所述调节阀 (4) 的开口度与所述箱式除尘器 (6)和所述 骨料待料仓(2)之间的压力差成反比。 3、 根据权利要求 2所述的混凝土搅拌站的掺和料搅拌系统, 其 特征在于, 所述调节阀 (4) 包括: 阀座(46), 具有阀孔; 导杆(41), 第一端连接在所述阀座(46)上, 第二端朝向所述 箱式除尘器(6)侧延伸; 阀芯板(45), 配置为与所述阀孔相匹配, 安装在所述导杆(41) 的第二端; 调节弹簧(44), 套设在所述导杆(41)上, 位于所述阀座(46) 和所述阀芯板 (45)之间。
4、 根据权利要求 1所述的混凝土搅拌站的掺和料搅拌系统, 其 特征在于, 所述箱式除尘器(6)与所述粉料计量斗 (10)之间设置 有第一滤袋(8)。 55、、 根根据据权权利利要要求求 11所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其 特特征征在在于于,, 所所述述箱箱式式除除尘尘器器 ((66 )) 与与所所述述搅搅拌拌主主机机((11 ))之之间间设设置置有有 第第二二滤滤袋袋((1122 ))。。
66、、 根根据据权权利利要要求求 11所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其 55 特特征征在在于于,, 所所述述第第一一侧侧面面连连通通所所述述骨骨料料待待料料仓仓((22 )) 的的顶顶部部。。
77、、 根根据据权权利利要要求求 11所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其 特特征征在在于于,, 所所述述第第二二侧侧面面连连通通所所述述粉粉料料计计量量斗斗 ((1100 )) 的的顶顶部部。。
88、、 根根据据权权利利要要求求 11所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其 特特征征在在于于,, 所所述述第第一一侧侧面面和和所所述述第第二二侧侧面面为为相相对对侧侧面面。。
1100 99、、 根根据据权权利利要要求求 11所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其 特特征征在在于于,,所所述述箱箱式式除除尘尘器器(( 66 ))的的第第二二侧侧面面上上与与所所述述粉粉料料计计量量斗斗(( 1100 )) 连连通通的的开开口口位位于于所所述述第第二二侧侧面面的的上上部部。。
1100、、 根根据据权权利利要要求求 33 所所述述的的混混凝凝土土搅搅拌拌站站的的掺掺和和料料搅搅拌拌系系统统,, 其其特特征征在在于于,, 所所述述导导杆杆((4411 )) 的的第第一一端端和和第第二二端端分分别别设设有有第第一一限限位位
1155 *
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CN102922604B (zh) * 2012-11-14 2014-12-10 三一重工股份有限公司 混凝土搅拌站除尘系统和混凝土搅拌站
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